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#include "spm.h"
#include "shlib.h"
char *shlib_deps_objdump(const char *_filename) {
// do not expose this function
char *filename = NULL;
char *result = NULL;
Process *proc = NULL;
char cmd[PATH_MAX];
memset(cmd, '\0', sizeof(cmd));
if ((filename = strdup(_filename)) == NULL) {
fprintf(SYSERROR);
return NULL;
}
strchrdel(filename, SHELL_INVALID);
snprintf(cmd, sizeof(cmd), "%s %s '%s'", SPM_SHLIB_EXEC, "-p", filename);
shell(&proc, SHELL_OUTPUT, cmd);
if (proc->returncode != 0) {
free(filename);
shell_free(proc);
return NULL;
}
result = strdup(proc->output);
free(filename);
shell_free(proc);
return result;
}
StrList *shlib_deps(const char *filename) {
char **data = NULL;
char *output = NULL;
StrList *result = NULL;
// Get output from objdump
// TODO: use preprocessor or another function to select the correct shlib_deps_*() in the future
if ((output = shlib_deps_objdump(filename)) == NULL) {
return NULL;
}
// Initialize list array
if ((result = strlist_init()) == NULL) {
free(output);
return NULL;
}
// Split output into individual lines
if ((data = split(output, "\n")) == NULL) {
free(output);
strlist_free(result);
return NULL;
}
// Parse output:
// Collapse whitespace and extract the NEEDED libraries (second field)
// AFAIK when "NEEDED" is present, a string containing the library name is guaranteed to be there
for (size_t i = 0; data[i] != NULL; i++) {
data[i] = normalize_space(data[i]);
if (startswith(data[i], "NEEDED")) {
char **field = split(data[i], " ");
strlist_append(result, field[1]);
split_free(field);
}
}
free(output);
split_free(data);
return result;
}
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